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p la stic cap, as shown.
2.
Pry p la stic cap from each idle m ixture
screw .
INSTALLING PLASTIC LIMITER CAPS
NOTE: The carburetor must be in stalled on
the engine and properly adjusted prior to in sta ll
ation of the p la stic caps.
1. Thoroughly warm up the engine. B e sure
choke is open.
2. Check dwell reading and adjust, if n e c e s
sa ry . D w ell reading on 366 and 427 V8 engines
should be 28 to 32 d eg rees.
3. Adjust ignition tim ing to 8°BTDC.
The B endix-Strom berg carburetor (W W Series)
as shown in figure 20, is installed on 351C engine.
The
m ost
significant change externally on the
carburetor is the addition of p la stic lim ite r caps
which are in stalled over each of the idle m ixture
sc r e w s.
BENDIX-STROMBERG CARBURETOR
ADJUSTMENTS
IDLE AND MIXTURE ADJUSTMENT
P relim in a ry Checks
1. Thoroughly warm up the engine. Be sure
the choke is open.
2. B e su re the carburetor is properly secu red
to the intake manifold, which w ill exclude the p o s
sib ility of air lea k s. C arburetor-to-m anifold bolts
or nuts should be tightened to 20-25 foot-pounds
torque.
3. Inspect the manifold heat control valve (if
used) for freedom of action and co rrect spring
tension.
4. A ir
conditioning,
turned
on during the
carburetor adjustm ents.
5. Check dwell reading and adjust, if n e c e s
sa ry . Dwell reading on V6 engines should be 31 to
34 d eg rees.
6. Adjust ignition tim ing with vacuum advance
hose disconnected and plugged to 7^°BTDC. R e
connect vacuum advance hose.
C arburetor Adjustment
1.
Engine idle speed for the 351C engine should
be adjusted to 650 rpm by perform ing the following:
a.
R eferring to figure 21, place a %-inch open
end wrench on diaphragm extension of vacuum idle
stop to prevent its rotation w hile adjusting plunger.
BENDIX—STROMBERG CARBURETOR
when used, should be
FUEL SYSTEM—GASOLINE ENGINES
4. Adjust engine idle speed scr ew (fig. 13)
until engine idle speed is 600 rpm.
5. With engine running at idle sp eed , adjust
idle m ixture scre w s to give highest steady idle
speed.
6. Readjust engine idle speed as d escrib ed in
Step 4 to 600 rpm.
7. Turn idle m ixture screw s IN, equally, by
rotating clock w ise to LEAN m ixture until the en
gine idle speed reaches 550 rpm.
8. R eferring to figure 18, p la stic caps must
be in stalled so that ears on cap are aligned with
b o ss on secondary throttle body. Then carefully
push p la stic cap onto each idle m ixture sc rew (see
fig . 19) until it snaps into position.
CA U TIO N : UN D ER NO CO N D ITIO N
SHOU LD T H E D IA PHRAGM E X T E N S IO N
B E A LLO W E D TO R O T A T E OR IN T E R N
A L DAM AGE W IL L R E S U L T TO VACUUM
ID L E STO P UN IT.
b.
Adjust the plunger with a 3 /8 -in c h open end
w rench until the face of the plunger hex contacting
the carburetor throttle le v e r resu lts in the idle
speed given e a r lie r in Step 1.
2. Rotate idle m ixture screw s cou n terclock
w ise until tang on each p la stic cap contacts roll
pin in throttle body of carburetor as shown in View
B ,figure 20.
3. R eset the idle speed as directed in Step 1.
4. Turn "in" idle m ixture scr ew s equally by
rotating clock w ise to LEAN m ixture until the fo l
lowing idle speed reach es 600 rpm.
5. With engine running, vacuum id le stop hose
disconnected, check reduced engine rpm . The r e
duced engine speed should be 400 rpm. If n e c e s
sa ry , adjust id le speed screw (View A, fig. 20) to
obtain 400 rpm. Reconnect vacuum id le stop h ose.
FLOAT LEVEL ADJUSTMENT
1. R em ove air clean er and disconnect choke
and a ccelera to r linkage and fuel line from carbur
etor. D isconnect fast idle link and a cce lera to r
pump rod.
2. Rem ove carb u retor-to-m an ifold retaining
b olts or nuts, then rem ove carburetor from engine.
3. R eferring to View A, figure 20, rem ove
sc r e w s from top of air horn. Separate a ir horn and
throttle body from main body of carburetor. C are
fully pour fuel from float bowl.
4. Hold main body inverted as shown in figure
22. This w ill allow weight of float to hold needle in
the closed p osition. U se float gauge (J-8824) to
Sec. 6M
Page 29
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